My dog is a Malamute and only a little over a year old. He's stubborn as fuck at the dog park and wants to play with everything. I mean everything. He loves little kids too. He doesn't really seek them out to play, but if one starts playing with him, he'll reciprocate. As of now he's about 90lbs maybe. We were at the park a couple weeks ago and there was one other family there with a pupper and their toddler. The toddler was just walking around playing with the dogs and our's wasn't really giving it much attention. Well the toddler suddenly tripped towards our dog and he took that as "oh shit it's playtime". He started jumping around the toddler and when the father of the toddler snatched him up, our dog was jumping up trying to get to the toddler because he wanted to play and didn't understand he can't. Luckily, the guy knew exactly what our dog was doing and wasn't being aggressive, so he was fine after we calmed our dog down. I was running over to hold back our dog and I said, "knee him in the chest if you need to!!" and the guy was like "Oh I was gonna."

He was even holding his toddler next to our dog while I held him in a sitting position so his kid knew the dog was only trying to play with him.